/* ヘッダースタイル */
.site-header {
    background-color: var(--bg-primary, #ffffff);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

.site-header .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    width: 100%;
}

/* ロゴ */
.header-logo {
    flex-shrink: 0;
}

.header-logo .logo-link {
    display: block;
    height: 50px;
}

.header-logo #logo {
    height: 100%;
    width: auto;
    transition: height 0.3s ease;
}

/* ナビゲーション */
.header-nav {
    display: flex;
    gap: 24px;
    align-items: center;
    margin: 0 auto; /* 中央配置 */
}

.nav-link {
    color: #2D3436;
    font-weight: 500;
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 8px;
    transition: all 0.2s ease;
    position: relative;
}

.nav-link:hover {
    background-color: #F8F9FA;
    color: #FF6B35;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background-color: #FF6B35;
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-link:hover::after {
    width: 80%;
}

/* コンタクト情報 */
.header-contact {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-shrink: 0;
}

.contact-info {
    display: flex;
    align-items: center;
    gap: 20px;
}

.payment-info,
.phone-info {
    display: flex;
    align-items: center;
    gap: 8px;
}

.payment-info {
    padding: 6px 12px;
    background-color: #F8F9FA;
    border-radius: 20px;
    font-size: 14px;
}

.icon-payment,
.icon-phone {
    height: 20px;
    width: auto;
}

.phone-number {
    color: #FF6B35;
    font-weight: 600;
    text-decoration: none;
    font-size: 18px;
    transition: color 0.2s ease;
}

.phone-number:hover {
    color: #E85A2C;
}

/* モバイルメニューボタン */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    padding: 8px;
    cursor: pointer;
    position: relative;
    width: 40px;
    height: 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.hamburger-line {
    display: block;
    width: 24px;
    height: 2px;
    background-color: #2D3436;
    transition: all 0.3s ease;
    position: relative;
}

.hamburger-line:nth-child(1) {
    margin-bottom: 6px;
}

.hamburger-line:nth-child(2) {
    margin-bottom: 6px;
}

.hamburger-line:nth-child(3) {
    /* 最後の線はマージン不要 */
}

.mobile-menu-toggle.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
    margin-bottom: 0;
}

.mobile-menu-toggle.active .hamburger-line:nth-child(2) {
    opacity: 0;
    margin-bottom: 0;
}

.mobile-menu-toggle.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* モバイルナビゲーション */
.mobile-nav {
    position: fixed;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100vh;
    background-color: #ffffff;
    transition: left 0.3s ease;
    z-index: 9999;
    box-shadow: 2px 0 10px rgba(0,0,0,0.1);
}

.mobile-nav.active {
    left: 0;
}

.mobile-nav-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    border-bottom: 2px solid #E9ECEF;
    background-color: #F8F9FA;
}

.mobile-nav-title {
    font-size: 18px;
    font-weight: 600;
    color: #2D3436;
    margin: 0;
}

.mobile-nav-close {
    background: none;
    border: none;
    font-size: 32px;
    line-height: 1;
    color: #636E72;
    cursor: pointer;
    padding: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    transition: all 0.2s ease;
}

.mobile-nav-close:hover {
    background-color: #E9ECEF;
    color: #2D3436;
}

.close-icon {
    font-weight: 300;
}

.mobile-nav-content {
    padding: 24px;
    overflow-y: auto;
    height: calc(100vh - 80px);
}

.mobile-nav-link {
    display: block;
    padding: 16px 20px;
    color: #2D3436;
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    border-bottom: 1px solid #E9ECEF;
    transition: all 0.2s ease;
}

.mobile-nav-link:hover {
    background-color: #F8F9FA;
    color: #FF6B35;
    padding-left: 28px;
}

.mobile-contact-info {
    margin-top: 24px;
    padding-top: 24px;
    border-top: 2px solid #E9ECEF;
}

.mobile-phone {
    display: flex;
    align-items: center;
    gap: 12px;
    color: #FF6B35;
    text-decoration: none;
    font-size: 20px;
    font-weight: 600;
}

.icon-phone-mobile {
    height: 24px;
}

/* スクロール時のヘッダー縮小 */
.site-header.scrolled {
    padding: 0;
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

.site-header.scrolled .header-content {
    padding: 8px 0;
}

.site-header.scrolled #logo {
    height: 40px;
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
    .desktop-only {
        display: none !important;
    }

    .mobile-only {
        display: block !important;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .header-content {
        padding: 8px 0;
    }

    .header-logo #logo {
        height: 40px;
    }

    .payment-info {
        padding: 4px 8px;
    }

    .payment-info span {
        display: none;
    }
}

@media (min-width: 769px) {
    .mobile-only {
        display: none !important;
    }

    .mobile-nav {
        display: none !important;
    }
}